Ornamental stitch sewing machines



Aug. 25, 1959 Filed Jan. 7, 1958 E. JOHNSON 2,900,938

- ORNAMENTAL STITCH SEWING MACHINES (S'Sheets-Sheet 1 Fig. I.

INVENTOR.

ATTORNEY- Ralph E. Johnson g- 1959 R. E. JOHNSON 2,900,938

ORNAMENTAL STITCH SEWING MACHINES Filed Jan. 7. 1958 35 Sheets-Sheet 2aim IN V EN TOR.

Ralph E. Johnson BY m4/% ATTORNEY Aug. 25, 1959 R. E. JOHNSON ORNAMENTALSTITCH SEWING MACHINES 3 Sheets-Sheet 3 Filed Jan. 7. 1958 IN VEN TOR.Ralph E. Johnson BY 66% ATTORNEY f nite 2,900,933 ORNAMENTAL srlrcnSEWING MACHINES Application January 7, 1958, Serial No. 707,492 4Claims. (Cl. 112-158) This invention relates to improvements inornamental stitch sewing machines and has for an object to provide sucha machine with novel mechanism whereby the machine can be made toproduce a large number of ornamental designs.

My United States Patent No. 2,862,468, granted December 2, 1958, ofwhich the present application is a continuation-in-part, among otheritems, discloses a needle-vibrating mechanism including a stack ofrotary cams adapted to actuate a pair of cam-followers which in turnfunction to vibrate the needle laterally of the direction of normal workfeed.

A primary object of the present invention is to provide a mechanismgenerally similar to that shown in my above application but modified tothe extent that it will be capable of efiiciently functioning with asingle replaceable cam.

A further object of the present invention is to provide a machine of thepresent type with conveniently controllable means for determining aneutral position of nonvibration of the needle at the center or ateither side of the field of lateral throw of the needle, whereby theneedle may be caused to vibrate laterally from zero to maximum acrossthe center line of the field or entirely at either side of the centerline.

With the above and other objects in view, the invention comprises thedevices, combinations and arrangements of parts hereinafter described inconnection with the accompanying drawings which illustrate a preferredembodiment of 'the invention from which the several features of theinvention and the advantages obtained thereby will be readily understoodby those skilled in the art.

In the drawings:

Fig. 1 represents a side elevational view in axial cross section of asewing machine in which the present invention is embodied.

Fig. 2 represents, on an enlarged scale, a sectional view takensubstantially along the line 22 of Fig. 1.

Fig. 3represents, on an enlarged scale, a perspective view of a portionof the control mechanism disclosed in Figs. 1 and 2.

Fig. 4 represents, on an enlarged scale, a top plan view of a portion ofthe mechanism illustrated in Fig. 1.

Fig. 5 represents, on an enlarged scale, a portion ofthe indicia platewhich is mounted on the forward face of the sewing machine and whichcooperates with the control levers.

Figs. 6-9, inclusive, represent diagrammatic views illustrating variouspositions of the mechanism. particularly disclosed in Fig. 4.

As illustrated in the drawings, the frame of the sewing machine in whichthe present invention is incorporated comprises a substantiallyrectangular-shaped base 12 forming at its upper side a work-supportingsurface or bed-plate 13. Suitably secured upon the base 12 is avertically disposed hollow standard 14 carrying an overhangingbracket-arm 15 terminating in a hollow head rates Patent 0 2 ,900,938Patented Aug. 25, 1959 ICE 16 in which is mounted a reciprocatoryneedle-bar 17 and a presser-har 18. The upper part of the bracket-arm 15is closed by a cover plate 19. The main driving shaft 20, disposedwithin and lengthwise of the overhanging bracket-arm 15, is journaled insuitable bearings such as bearing 21 (see Fig. 1) which are secured inthe sewing machine frame forming a part of the bracket arm 15. The armstandard end of the shaft 20 is connected with a hand wheel 22 in amanner which is best disclosed in United States Patent No. 2,617,375,dated November 11, 1952.

Also secured to the main shaft 20 in a manner as is disclosed in theabove noted patent is a gear 23. The main shaft 21 reciprocates theneedle bar 10 carried in the head 9. A rotary loop-taker actuatingshaft, not herein shown, is suitably journaled beneath the bed 12 andcarries the usual type of loop-taker mechanism which cooperates in theformation of lock stitches with a needle 24 carried by the needle bar17. The loop-taker, together with its shaft, is driven by the main shaft21) through a vertical shaft 25 by way of bevel gears 26 and 27 (seeFig. 1), gear 26 being secured upon the upper end of the vertical shaft25 while gear 27 is fast upon main shaft 2t). Also disclosed in Fig. lare pitmans 28 and 29 which are actuated in a conventional manner bymain shaft 20 for the purpose of driving a feed-dog (not shown) to theend that work material can be fed across the work-supporting platform 13and beneath a presser foot 30 carried by the lower end of thepresser-bar 18, all in a manner which is disclosed and described in myabove noted Patent No. 2,862,468.

The arm standard 14 is especially designed to provide adequate space forhousing sewing machine parts. Within the lower portion of the standardis provided a housing in which is mounted a vertically disposed electricmotor (not herein shown) which, as best disclosed in the above notedPatentNo. 2,617,375 is adapted to drive the main shaft 20 by way of thegear 23.

The machine, in accordance with the present invention, comprises azigzag type of needle-bar 17 which is adapted, in addition to beingreciprocated in a direction of its length, to be shifted periodicallyback and forth laterally of the direction of work'feed to produce incooperation with the rotary loop-taker zigzag stitches. The machine isprovided with a removable camwhich is rotated in synchronism with themovements of the needle-bar, a can1-follower adapted to track the cam,and means for transferring the movements of the cam-follower to theneedle-bar mechanism for the purpose of moving it back and forthlaterally of the direction of work feed. Also, the present machine isprovided with operator-influenced means for determining a position ofnon-vibration of the needle at the center or at either side of the fieldof lateral throw of the needle, whereby the needle may be caused tovibrate laterally from zero" to maximum across the center line of thefield or entirely at either side of the field of vibration of theneedle. Also, operator-influenced means are provided for varying at willthe amplitude of lateral needle movement.

It is to be particularly understood that the single cam with which thepresent machine is equipped is adapted to be conveniently removed fromthe machine so that it may be replaced'by a cam having a different shapeto the end that a different pattern of ornamental stitches can beproducedby the machine whenever the machine is provided with a new cam.

Referring particularly to Figs. 1, 2. and 4, the main rotary shaft 20 isprovided intermediate its ends with a wormgear 31 which meshes with agear wheel 32 formed integrally with a sleeve 33 rotatably mounted upona verticallydisposed cylindrical stud 34 whose lower portion is mountedwithin an aperture 35 formed in the bracket-arm 15. A set screw 36 locksthe member 34 in a fixed position. From this, it is to be understoodthat rotation of the main shaft will, through the gears 31 and 32,rotate the sleeve 33 about the vertical stationary post 34. The sleeve33 is provided with a shoulder 37 upon which rests the removable cam 38.

Formed as a part of the cam 38 is a handle 39 which facilitates theplacing of the cam on and removal of the cam from its mounting furnishedby the shoulder 37 of the sleeve 33, all in a manner which is bestdisclosed in my copending United States patent application Serial No.636,023, filed June 24, 1957.

As may be best observed in Figs. 1 and '4, 'a finger 40 extends upwardlyfrom the shoulder 37 and through an aperture 41 provided in the cam 38in a manner such that the cam 38 will be rotated in synchronism with thesleeve 33 and the main shaft 20. To facilitate the insertion into andthe removal from the machine of the cam 38 the bracket-arm 15 isprovided with a cylindrical opening 42 through which an operator mayreadily grasp the handle 39 of the cam.

As may be best observed in Fig. 1, the opening 42 is normally adapted tobe closed by means of a plate 43 pivoted to the upper portion of themachine arm 15 all in a manner as is disclosed in my copending patentappli cation Serial No. 471,766. As may be best observed in Figs. 1 and2 there is rotatably mounted about the post 34 and beneath the gearwheel 32 a web 44 of a needle bight-selector having upstanding elements45 and 46 which support three stepped concentric discs 47, 48 and 49.Projecting from a peripheral portion thereof is a needle bight-selectorarm 58 which is secured thereto by means of screws 51-51. It is to beunderstood that the arm 50 provides an operator-influenced means wherebythe web 44 with its arms 45 and 46 and discs 47, 48 and 49 may beshifted about the upstanding post 34.

As may be best disclosed in Fig. 4 the interior portion of the bracketarm 15 is provided with a pair of stop arms 52 and 53 of which each isadjustably secured to the bracket arm by means of a screw 54. The arms52 and 53 cooperate with the web 44 so as to limit the rotary motion ofthe web and its actuating member 50.

Referring particularly to Figs. 1, 2, 4 and 6, the needle bight-selectorweb 44 is provided in its upstanding portion with a'radially disposedcylindrical guide aperture 55 which is adapted to receive, for purposeshereinafter described, a spherical guide head 56 carried by a pitmanmember 57 Cooperating with the rotary cam 38 is a cam follower 58carried upon a substantially C-shaped member 59 having vertically spacedarms 60 and 61 which are appropriately apertured so as to receive avertical post 62 upon which the member 59 is pivoted. As is bestdisclosed in Fig. 2, the lower end of the post 62 is mounted within anaperture 63 formed within the frame 15 and is fixed within such apertureby means of a set screw 64. A collar 65 is rigidly secured to the post62 by means of a set screw 66 and functions to retain the cam followermember 58 with its G-shaped portion 59 in proper vertical alignment upona shoulder 67 provided upon the post 62.

The outer portion of the cam-following arm 60 is provided with a member68 adapted to engage the substantially vertically disposed face 69 of amotion-integrat ing plate which is generally designated by the numeral70. As is best shown in Fig. 1 the plate 70 is pivotally mounted about avertical axis between jaws 71 and 72 of a substantially C-shaped portionof the right-hand end of the pitman 57.

Referring to Figs. 1 and 4, the left-hand end of the pitman 57 isprovided with a O-shaped block 73 pivotally mounted, by way of avertical pin 74, upon a needlebar gate 75 which in turn is pivotallymounted about a post 76 of the resser-bar mechanism, all in a manner 4which is best disclosed in my above noted copending application SerialNo. 471,766.

Still referring to Figs. 1 and 4, the pitman 57 is adapted to be springbiased at all times in a right-hand direction by means of a coil spring77 which has its one end Wrapped about the distal end of the pivot pin74 while its other end is anchored to an arm 78 of a member 79 pivotallymounted upon a vertical pin 80 anchored to the frame 15. The pivot arm79 is provided with another arm portion 81 which is adapted to engagethe rear face of the motion integrating plate 70 so as to bias theplate, together with' the pitman 57, toward the cam follower 58 therebyto force the follower into engagement with the cam 38. From this it isto be understood that rotation of the cam 38 will pivot the cam follower58 about its post 62 and that the member 68, bearing against the plate69, will shift the latter element in a left-hand direction as viewed inFig. 4.

Referring to Figs. 3 and 4, the arm 61 of the camfollowing assembly 59is provided with a curved face 82 disposed opposite the disc 48 in amanner such as normally to clear the face 48 but such that the oppositeend portions of the curve 82 will alternatively abut against the face 48thereby to provide stop elements to prevent the cam follower 58 fromshifting in either direction beyond a predetermined position. This isparticularly important when the cam 38 is removed from the sleeve 33 forif such an abutment member were not provided the cam follower 58 and thepitman 57 would shift in a right-hand direction as viewed in Fig. 4, toa degree that the needle 24 would not be aligned with the throat-plateaperture (not herein shown) with the result that the needle could strikethe throat-plate.

Referring to Figs. 3 and 4 it is to be understood that the coil spring77 will normally bias the pitman 57 in a right-hand direction to the endthat the motion-integrating plate 70 will not only engage the member 68but will also engage a projecting portion 83 of an arm 84 integrallyformed with a sleeve 85 rotatably and slidably mounted on a verticalpost 86. As may be observed from Fig. 2 the lower portion of the post 86is received within an aperture 87 formed in the frame 15 and is securedwithin the aperture by means of a set screw 88. The arm 84 is formedwith a projecting portion 89 adapted to engage a selected one of thethree disc elements 47, 48 or 49. It is to be understood that bypositioning the element 89 against a selected one of these discs themotion-integrating plate 70 will effectively fulcrum about the member 68under the action of the spring 77 with the result that the pitman willbe shifted in the direction of its length and the needle-bar 17 and theneedle 24 will shift laterally of the direction of work feed.

From the above it will be appreciated that as the cam 38 rotates aboutits vertical post 34 the cam-follower 58 will pivot about the post 62 tothe end that it will function to rock the motion-integrating plate 70about the normally stationary abutment member 83 to the end that thepitman 57 will shift back and forth and consequently shift the needle 24laterally of the direction of work feed in a manner which is perhapsbest shown in my copending application Serial No. 471,766. With theportion 89 of the abutment member 83 positioned against the middle disc48, the needle is normally caused by the cam 38 to vibrate laterallyfrom zero to maximum across a center line drawn in the direction of feedand aligned with the center of the throat-plate aperture. With theabutment member 83 positioned against the upper disc 47, the pitman 57will shift slightly to the right so that the needle would be normallypositioned at one side of the normal center line. Likewise, when theabutment member 83 is positioned against the lower disc 49 the pitman 57will shift in a left-hand direction so that the needle will be shiftedto the other side of its center line. In this way the arm 84 acts as afield selector for the needle.

The arm 84, together with its sleeve 85, is adapted to be shifted up anddown along the associated post 86 so that the abutment member 89 may bebrought into engagement with a respective one of the discs 47, 48 and 49for the purpose of providing the proper field of vibration for theneedle. Referring particularly to Fig. 3, the sleeve 85 is provided witha slot 90 whichis adapted to receive a knife-like bar 91 carried by aplatform 92 formed at one end portion of a lever 93.

It is to be particularly observed that the upright post 86 upon Whichthe sleeve 85 is mounted is provided with three vertically spaced slots94-94 arranged so that whenever the knife 91 is engaged within one ofthe slots the abutment member 89 of the arm 84 engages an adjacent oneof the three discs 47, 48 and 49. Thus, if the lever 93 is first shiftedin a left-hand direction as viewed in Fig. 2 the knife will be withdrawnfrom one of the slots 94 and thereafter the lever 93 may be shiftedupwardly or downwardly so that the knife will engage a different slot tothe end that the abutment member 89 may engage a predetermined one ofthe discs 47, 48 or 49. As is illustrated in Fig. 2, the knife 91 isreceived Within the middle of the three slots 94 and in this positionthe abutment member 39 engages the middle disc 48, and, therefore, it isclear that if the lever 93 is shifted upwardly a notch the abutmentmember will engage the upper disc 47 or on the other hand, if the knife91 is shifted downwardly a notch the abutment member 89 will then engagethe lower disc 49.

Referring to Fig. 3, the lever 93 extends substantially crosswise of thesewing machine bracket arm 15 and its right-hand end portion extendsthrough an aperture 94 provided in an indicia plate 95 so as to extendoutside the confines of the machine frame. The indicia plate 95 isappropriately secured to the exposed face of the sewing machine frame15. Referring to Figs. 1, 2 and 3 the distal end portion of the lever 93is provided with a finger piece 96 secured thereto by means of a setscrew 97. In order to straddle the vertical post 62 the lever 93 isformed with a central aperture 98. An intermediate portion of the lever93 is provided with depending arms 9999 carrying a pivot member 100,which is adapted to be slidingly received within a slot 101 formedbetween the upper surface of the disc 47 and the lower portion of amember 102. The member 102 extends downwardly through a slot 103provided lengthwise of the lever 93 and has its upper end formed as aC-shaped member 104 which embraces the post 86 and is rigidly securedthereto by means of a set screw 105. From this it is to be understoodthat the member 102 in cooperation with the disc 47 functions to confinethe movements of the pivot member 100 so as to insure that the lever 93will reciprocate back and forth in a substantially straight path. Itwill be observed that the member 102 has a depending element 106 whichfunctions to arrest the movement of the pivot member 100and'consequently the lever 93 in a left-hand direction as viewed in Fig.3.

Projecting upwardly from the lever 93 is a finger 107 to which isanchored one end of a coil spring 108 whose other end is anchored to thepost 62 thereby to bias the lever 93 in a right hand direction as viewedin Fig. 3 with the result that the knife 91 is adapted forcibly toengage a selected one of the slots 94-94 provided within the uprightpost 86. Thus, it is to be understood that the lever handle 96 can begrasped by an operator and be sequentially pushed inwardly so astowithdraw the knife 91 from one of the slots 94 and thereafter be movedeither upwardly or downwardly so as to position the blade 91 oppositeeither the upper or the lower slot 94. Thereafter the handle 96 may bereleased whereupon the knife 91 under the impetus of the Spring 108 willforcibly engage either the upper or the lower of the slots 9494.

With the discs 47, 48 and 49 projecting outwardly as they do, it isnecessary to withdraw the abutment member 89 from engagement with thediscs before it may be safely shifted lengthwise of the post 86.Meansfor accomplishing this function take the form of a finger 109extending outwardly from the platform member 92 of the lever 93, whichfinger is adapted to engage a second finger 110 integrally formed withthe sleeve so that whenever the lever 93 is shifted in a left-handdirection as viewed in Fig. 3 the arm 109 will engage the arm 110 andpivot it together with its sleeve 85 and the abutment member 39 to theend that the latter element will be withdrawn from engagement with anyone of the discs 47, 48 and 49. Thereafter, when the lever 93 isoscillated about its pivot member 106 the abutment member 89 'willremain out of engagement with the discs until such time that the lever93 is again shifted in a right-hand direction under the force of thespring 108 whereupon the abutment member 89 will be permitted to engagea selected one of these discs 47,48 and 49.

In order to lock the lever 93 in one of its three posi tions of verticaladjustment the indicia-carrying plate is provided with three slots11l-111 which communicate with the aperture 94. Also, the right-hand endportion, as viewed in Fig. 3, of the lever 93 is provided with a notch112. From this it is to be understood that whenever the lever 93 ispushed inwardly toward the sewing machine frame the lever notch 112 willpermit the lever to be shifted upwardly or downwardly so that theright-hand end portion of the lever may be placed within either theupper or the lower slot 111 whereupon whenever the lever 93 is releasedit will be shifted outwardly by the spring 198 so as effectively to lockthe right-hand end portion of the lever in a selected one of the threeslots 111-111.

Still referring to Fig. 3, the field selector lever 50 extends through aslot 113 provided in the indicia plate 95, which slot has an invertedV-shaped portion 114 representing the normal or home position of thelever 50. A leaf spring 116 provided with the arm 50 normally biases thearm upwardly so that whenever the arm is in its extreme left-handposition as viewed in Fig. 5 it will be maintained in such position bythe slot 114. Indicia may be marked upon the plate 95 so as to indicatethe various possible positions of the lever 93 and the arm 50.

As mentioned hereinabove, the right-hand end portion of the pitman 57 isprovided with a ball 56 guided within an aperture 55 formed in themember 44. The member 44 is adapted normally to remain in a stationaryposition and thus it is to be understood that when the pitman 57 isshifted back and forth due to the rotation of the cam 38, the ball 56will shift back and forth in a straight line. However, whenever theoperator shifts the handle 50 within the slot 113 the right-hand endportion of the pitman will be shifted transversely of the sewing machineframe 15 and the motion-integrating plate 70 will be shifted laterallyof the members 68 and 83.

Referring particularly to Fig. 4 it is to be understood that as the cam38 rotates the cam follower 68 will pivot about the post 62 and forcethe motion-integrating plate 70 to fulcrum about the normally stationaryabutment 33 thereby causing the left-hand end of the pitman 57 to shiftback and forth to the end that the needle will vibrate laterally of thedirection of Work feed. It is manifest that as the handle 50 is shiftedabout its stationary post 34 the position of the motion-integratingplate 75 will vary relative to the cam-follower 68 and the abutmentmember 83 to the degree that the pattern of lateral needle motion willvary. In the present mechanism the handle 50 is adapted either toincrease or decrease the amplitude of lateral needle vibration asproduced by the cam 38. With the handle 50 in the extreme left-handposition as illustrated in Figs. 4 and 5, the amplitude of lateralneedle motion will be at a minimum while as the arm 50 is shifted in aright-hand direction the amplitude will tend to increase until it is ata maximum when the handle 50 is at its extreme righthand position.

Fig. 6 diagrammatically illustrates the present needle vibratingmechanism adjusted to cause a maximum amplitude of needle vibration. Itis to be observed that the arm 50 is at its extreme right-hand positionwhich effectively places the center portion of the motion-integratingplate adjacent the cam follower element 68 so that the pitman 57substantially receives the full benefit of the back and forth motion ofthe member 68 and the abutment member 83 merely functions as astationary fulcrum for the motion-integrating plate 70. In this diagramthe abutment member 83 is illustrated as engaging the middle disc 48.Thus, the needle is in its center setting.

Fig. 7 illustrates the mechanism positioned to cause a minimum amplitudeof needle vibration about the center needle position. For example, thearm 50 is at its extreme left-hand position so that themotion-integrating plate 70 has its center portion positioned directlyupon the abutment member 83 such that as the cam follower 58 shifts backand forth the plate 70 will merely pivot about its trunnions andtherefore not effectively shift the pitman 57 back and forth. Also, theabutment member 83 is positioned upon the center disc 48 and, therefore,the needle is at its so-called center setting.

Fig. 8 illustrates the mechanism set to cause a minimum amplitude ofneedle vibration at one side of the center setting. More specifically,the handle 50 is at its extreme left-hand position as it Was in Fig. 7so that the center of the motion-integrating plate 70 is disposeddirectly in alignment with the member 83 to the end that the motions ofthe cam follower will merely pivot the plate about its trunnions withoutshifting the pitman 57 back and forth. Also, the abutment member 83 ispositioned against the periphery of the upper disc 47 so that the pitmanmember 57 is disposed in an extreme right-hand direction such that theneedle will be positioned at one side of the center line.

Fig. 9 illustrates the mechanism adjusted to cause a minimum amplitudeof needle vibration at that side of the center setting opposite to thatillustrated in Fig. 8. More specifically, the handle member 50 is againdisposed in its extreme left-hand position to the end that no back andforth motion will be imparted to the pitman 57. Furthermore, theabutment member 83 is disposed against the lower disc 49 such that thepitman 57 is shifted in its extreme left-hand position thereby placingthe needle at that side of the center line opposite to that illustratedin Fig. 8.

From the above it is to be appreciated that as adjusted in the mannershown in Fig. 6 the sewing machine will perform straightaway stitchingonly in the event that the cam 38 is provided with a peripheryconcentric with the center of the post 34. However, if the cam is of thetype illustrated in Fig. 4, having the usual hills and dales, therein,the machine !will perform zigzag stitching with the center of thestitches being represented by the normal needle centerline 115.

In Figs. 7, 8 and 9, however, with the motion-integrating plate '76being disposed directly in line with the member 83 the machine willperform straightaway stitches no matter what type of cam is carried uponthe post 34. This is for the reason that the plate 70 will merely beshifted by the cam idly about its trunnions without moving the pitmanmember 57. Thus, in Fig. 7 the machine is adjusted such that it willperform merely straight line stitches along the normal centerline 115.In Fig. 8 the machine is adjusted so that straightaway stitching willoccur with the stitches being disposed at one side of the center line115, while in Fig. 9 the machine will again perform straightawaystitching with the stitches being at the other side of the normalcenterline 1 15,

Having thus set forth the nature of the invention, what I claim hereinis:

1. A control mechanism for an ornamental stitch sewing machine having ahollow frame and a member in said frame to be controlled by saidmechanism, comprising, a post fixed within said frame and provided Witha plurality of transverse slots, an elongated lever disposed within saidframe transversely of the longitudinal axis of the post with a handlecarried on its one end and extending outside the confines of said frameand a bar carried on its other end for engagement in a selected one ofthe post slots, a spring connecting said frame and said lever andbiasing said lever endwise of itself whereby said bar will be maintainedwithin a selected one of said post slots, means carried by said frameand an intermediate portion of said lever enabling said lever to bemanually shifted lengthwise of itself and to be oscillated about an axisdisposed transversely of the lever whereby the bar may be shifted intoengagement with any one of the post slots, means connecting thebar-carrying end of the lever with the member to be controlled wherebythe member may be actuated in response to shifting of the bar from oneslot to another, and means carried by the frame for releasably lockingthe handle-carrying end of the lever in a selected one of a plurality ofpredetermined positions.

2. A control mechanism for an ornamental stitch sewing machine having ahollow frame and a member in said frame to be controlled by saidmechanism, comprising, a post fixed within said frame and provided witha plurality of transverse slots therein, an elongated lever disposedwithin said frame transversely of the longitudinal axis of the post witha handle carried on its one end and extending outside the confines ofsaid frame and a bar carried on its other end for engagement in aselected one of the post slots, a spring connecting said frame and saidlever and biasing said lever endwise of itself whereby said bar will bemaintained within a selected one of said post slots, :1 pin carriedcrosswise of and on an intermediate portion of said lever, means carriedby the frame and formed with a slot therein for receiving the lever pinand enabling said lever to be manually shifted lengthwise of itself andto be oscillated about an axis disposed transversely of the leverwhereby the bar may be shifted into engagement with any one of the postslots, means connecting the bar-carrying end of the lever with themember to be controlled whereby the member may be actuated in responseto shifting of the bar frame from one slot to another, and means carriedby the frame for releasably locking the handle-carrying end of the leverin a selected one of a plurality of predetermined positions.

3. A control mechanism for an ornamental stitch sewing machine having ahollow frame andpa member in said frame to be controlled by saidmechanism, comprising, a post fixed Within said frame and provided witha plurality of transverse slots, an elongated lever disposed within saidframe crosswise of the post with a handle carried on its one end andextending outside the confines of said frame and a bar carried on itsother end for engagement in a selected one of the post slots, a springconnecting said frame and said lever endwise of itself whereby said barwill be maintained within a selected one of said post slots, a pincarried crosswise of and on an intermediate portion of said lever, meanscarried by the frame and formed with a slot elongated lengthwise of saidlever and receiving therein the lever pin whereby said lever can bemanually shifted lengthwise of itself and oscillated about an axisdisposed transversely of the lever whereby the bar may be shifted intoand out of engagement with any one of the post slots, means connectingthe bar-carrying end of the lever with the member to be controlledwhereby the member may be actuated in response to shifting of the barfrom one slot to another, and means carried by the frame for releasablylocking the handlecarrying end of the lever in a selected one of aplurality 9 of predetermined positions of angular adjustment about itstransverse axis.

4. A control mechanism for an ornamental stitch sewing machine having ahollow frame and a member in said frame to be controlled by saidmechanism, comprising, a post fixed within said frame and provided witha plurality of transverse slots, said member being carried by andmounted for sliding movements lengthwise of and pivotal movements aboutsaid post, an elongated lever disposed within said frame transversely ofthe longitudinal axis of the post with a handle carried on its one endand extending outside the confines of said frame and a bar carried onits other end for engagement in a selected one of the post slots, aspring connecting said frame and said lever and biasing said leverendwise of itself whereby said bar will be maintained Within a selectedone of said post slots, means carried by said frame and an intermediateportion of said lever enabling said lever to be manually shiftedlengthwise of itself and to be oscillated about an axis disposedtransversely of the, lever whereby the bar may be shifted intoengagement with any one of the post slots, means connecting thebar-carrying end of the lever with the member to be controlled wherebythe member will be pivoted about and shifted lengthwise of the post inresponse to the endwise and oscillatory movements of the lever, andmeans carried by the frame for releasably locking the handle-carryingend of the lever in a selected one of a plurality of predeterminedpositions.

References Cited in the file of this patent UNITED STATES PATENTS

